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Presentation on Insulated Concrete Masonry and USVI Pilot Project January 25, 2012.

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Presentation on theme: "Presentation on Insulated Concrete Masonry and USVI Pilot Project January 25, 2012."— Presentation transcript:

1 Presentation on Insulated Concrete Masonry and USVI Pilot Project January 25, 2012

2 Presentation Outline Wall Insulating Basics Insulating Walls - Why and How Much is Enough? Staqable Symmetry Insulated Concrete Masonry Comparisons with Conventional Concrete Masonry Block Testing Manufacturing Addresses Island Construction Challenges USVI Pilot Project

3 Energy Losses

4 Balancing Economics and Energy Saving Design (Diminishing Returns on Insulation)

5 Insulation Properties Conventional Block vs. Staqable Symmetry Insulated Block Conventional Un-Insulated Block Inside COLD air escapes through webs (thermal breaks) Outside HEAT penetrates wall through webs (thermal breaks) Staqable Symmetry Insulated Block NO THERMAL BREAKS + EPS insulation provides barrier to: Keep Outside Heat Out Keep Inside Cold In

6 Construction Materials R/Thickness hr·ft2·°F/Btu Concrete Block 4"0.8 Concrete Block 8"1.11 Concrete Block 12"1.28 Standard Un-Insulated Concrete Block R Values Base on the handbook values, the thermal conductivity value for EPS foam insulation is R ins = 3.87/0.273 =14.17 hrft2° F/BTU Staqable Symmetry Insulated Concrete Block Calculated R Value Base on the handbook values, the thermal conductivity value for concrete is: R conc = ( /5.26 =1.45 hrft2° F/BTU where: thickness of the CMU is 11.5 inches average thickness of the insulation insert is 3.87 inches thermal conductivity of concrete is 5.26 Btuin/ hrft2° F thermal conductivity of EPS foam is.273 Btuin/ hrft2° F R total = R ins + R conc = = hrft2° F/BTU R Value Comparison Conventional Block vs. Staqable Symmetry Insulated Block

7 Summary of Testing Results Oakridge National Laboratory – Staqable Symmetry CMU has a great potential as an energy efficient masonry system…, was the highest among all ORN BTC hot box results for masonry walls National Concrete Masonry Association of America – Based on observations of three flexural tests, walls exhibit similar behavior as expected from conventional reinforced concrete masonry walls (ASTM C90 Test Average +/-3100 Psi, required 1900 psi) National Association of Home Builders – ASTM E331 Test (Water Infiltration), no water migrated through EPS foam Additional Hot Box Tests to be performed, anticipated R-Value 14-15

8 Staqable Symmetry Insulated Block Manufacturing Process

9 Island Building Challenges Design ConsiderationHow Insulated Block Addresses Consideration Hot Humid ClimateContains EPS Insulation which Keeps Hot Out, Cold In and Prevents Water Infiltration High Electricity CostsHigh R-Value Reduces Electricity Cost and allows AC to act as a Dehumidifier Hurricanes and Tropical StormsStaqable Symmetry Exceeds Structural Requirements of Conventional Block and Provided Water Tightness Local Labor Skills81% of All Structures in the Islands are Built with Concrete Block – Local Trades are Accustomed to Working with Material Shipping and LogisticsManufactured on Island and Block Machines can be Set up at Remote Locations

10 USVI Pilot Project Location and Rendering

11 USVI Pilot Project Excavation and Foundations

12 USVI Pilot Project Staqable Symmetry Insulated Block Installation

13

14 USVI Pilot Project Energy Saving Features – Photovoltaics and Shading Photovoltaic Panels to be installed on the low pitched concrete roof located above deck/walkway; note that this roof also was designed to provide shading for windows Total Power to be generated KW

15 Conventional Island Roof Framing for Un- insulated Roofs (Rafters with T&G) Problem - Insulating over Conventional Island Roof Framing (Rafters with T&G) Insulation Hurricane Force Wind Uplift T&G Boards USVI Pilot Project Roof Framing T&G Boards Installed over Rafters to Create Insulation Cavity Rafters Plywood Insulation T&G Boards Plywood Solution – Insulation cavity created between rafters USVI Pilot Project Energy Saving Features –Roof Insulation

16 High Performance Windows Manufacturer – WinDoor Inc. U-Value.27 SHGC.30 Visible Light Transmittance -.40 High Efficiency HVAC Units Manufacturer - Mitsubishi Mini-Spilt Ductless Air Conditioners 22 SEER Ductless High Efficiency Water Heaters Tank less, Instant Appliances Energy Star Rated USVI Pilot Project Other Energy Saving Features


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